CVE-2026-100523
MEDIUM
5,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: active
Confidentiality: N/A
Integrity: N/A
Availability: N/A
MEDIUM
6,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: required
Scope: changed
Confidentiality: low
Integrity: low
Availability: none
Description
AI Translation Available
Cotonti through 1.0.0 contains an open redirect vulnerability in message.php that base64-decodes the redirect parameter without domain validation. Unauthenticated attackers can craft malicious links with encoded external URLs to redirect users to arbitrary sites via meta refresh tags for phishing attacks.
601
URL Redirection to Untrusted Site ('Open Redirect')
DraftCommon Consequences
Security Scopes Affected:
Access Control
Confidentiality
Other
Potential Impacts:
Bypass Protection Mechanism
Gain Privileges Or Assume Identity
Other
Applicable Platforms
Technologies:
Web Based, Web Server
https://github.com/Cotonti/Cotonti
https://github.com/Cotonti/Cotonti/blob/1.0.0/message.php
https://github.com/Cotonti/Cotonti/blob/1.0.0/system/common.php
https://github.com/Cotonti/Cotonti/issues/1907
https://github.com/Cotonti/Cotonti/pull/1908
https://www.vulncheck.com/advisories/cotonti-through-1.0.0-open-redirect-via-me…